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Finding the Fourth Proportional to 385,774.83, 532,377.81 and 220,199.43

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Solution

The fourth proportional to 385,774.83, 532,377.81 and 220,199.43 is: 303,880.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,774.83 : 532,377.81 = 220,199.43 : x
  2. Step 2: Convert to fraction form
    385,774.83/532,377.81 = 220,199.43/x
  3. Step 3: Cross multiply
    385,774.83x = 532,377.81 × 220,199.43
  4. Step 4: Simplify right side
    385,774.83x = 117,229,290,306.65
  5. Step 5: Solve for x
    x = 117,229,290,306.65/385,774.83
  6. Step 6: Final answer
    x = 303,880.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.